Hello
On 9/15/19 8:57 AM, Jacek Anaszewski wrote:
Hi Dan,
On 9/11/19 8:01 PM, Dan Murphy wrote:
Add a documentation of LED Multicolor LED class specific
sysfs attributes.
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
.../ABI/testing/sysfs-class-led-multicolor | 73 +++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-class-led-multicolor
diff --git a/Documentation/ABI/testing/sysfs-class-led-multicolor b/Documentation/ABI/testing/sysfs-class-led-multicolor
new file mode 100644
index 000000000000..4ea54c2ad4c8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led-multicolor
@@ -0,0 +1,73 @@
+What: /sys/class/leds/<led>/brightness
+Date: Sept 2019
+KernelVersion: 5.5
+Contact: Dan Murphy <dmurphy@xxxxxx>
+Description: read/write
+ The multicolor class will redirect the device drivers call back
+ function for brightness control to the multicolor class
+ brightness control function.
+
+ Writing to this file will update all LEDs within the group to a
+ calculated percentage of what each color LED in the group is set
+ to. The percentage is calculated via the equation below:
+
+ led_brightness = requested_value * led_color_intensity/led_color_max_intensity
+
+ For additional details please refer to
+ Documentation/leds/leds-class-multicolor.rst.
+
+ The value of the color is from 0 to
+ /sys/class/leds/<led>/max_brightness.
+
+What: /sys/class/leds/<led>/colors/color_mix
+Date: Sept 2019
+KernelVersion: 5.5
+Contact: Dan Murphy <dmurphy@xxxxxx>
+Description: read/write
+ The values written to this file should contain the intensity
+ values of each multicolor LED within the colors directory. The
+ index of given color is reported by the color_id file present in
+ colors/<color> directory. The index determines the position in
+ the sequence of intensities on which the related intensity
+ should be passed to this file.
+
+ For additional details please refer to
+ Documentation/leds/leds-class-multicolor.rst.
As already mentioned in the reply to Pavel - let's avoid the
introduction of another sysfs file with multiple values.
OK for clarification remove the color_mix and color_id files and keep
the intensity files?
Dan
